We came across a scenario where our customer (a well know ISP) wanted to give access to their customers that the customers can login the UI of NetFlow Analyzer to view their data. The ISP has restricted the customer’s usage to a limit, thus having a logging to a monitoring tool like NetFlow Analyzer it will be an extra advantage for customers to know their up to day usage.
To achieve this we have a couple of steps:
1) Create a IP group for each customer
2) Create a user for the customer and associate it to the IP group.
Creating IP group for each customer
Let us consider a customer say Site A with IP network 192.168.1.0/24 and another customer say Site B with IP network 10.10.10.0/24. We create IP gr…
Earlier in my blogs,we have explored different technologies and features that are offered by NetFlow Analyzer related to bandwidth monitoring. This blog post is about a futuristic reporting feature.
The future is going to be IPV6(yes! it is officially launched) networks ranging from small to large are slowly migrating to IPV6 and for sure the IPV4 will be faced off soon.
Here few advantages of IPV6:
NetFlow Analyzer as a bandwidth monitoring tool quickly adopted this migration and brought a preliminary support to IPV6, that is we can see IPV6 related information in the raw data reports.
For detail study on data storage pattern in Net…
I hope everyone who had attended our joint webinar with Cisco about QoS Design and validation, would have got a better idea on how to design a network with effective QoS policing. For those who missed the Webinar, you can find the video presentation here.
In continuation to our Webinar, this blogs helps you in setting up QoS policies for Live Video Traffic and monitor them using NetFlow Analyzer.
On a network the Video traffic spread in three format:
Video On Demand
Video traffic has very high and extremely variable packets rate with a much higher average maximum transmission unit (MTU) when comparing to Voice.
For classifying the Video traffic to appropriat…
People using NetFlow Analyzer wonder, what these reports DSCP, TOS actually means ? Here is the blog which explain more detail about these fields.
The NetFlow packets exported from the device originally contains ToS value on each flow. From the ToS value, the analyzing software derives the DSCP.
Type of Service (TOS):-
The Type of Service field is present in IP Header and it was originally defined in RFC 791.
The Type of Service octet consists of three fields. The last 3 bits ( 7,6,5) are for the first field, labeled “Precedence” , intended to denote the importance or priority of the datagram. The second field, labeled “TOS” , denotes how the network should make tradeoffs between thro…
Frame Relay network are now being converted to MPLS type of network more rapidly. MPLS type of network helps the Network Administrators to easily manage the Network and MPLS network architecture is simple than traditional Frame Relay or packet switching networks.
Monitoring Network traffic through NetFlow export becomes very handy in MPLS type of networks. Consider a network which has below given architecture:
Task of an Administrator:-
Given task for Administrator is to monitor internet traffic of Site A, Site B and traffic between Site A and Site B. The Administrator of this network is using NetFlow Analyzer and monitoring all the Site Routers and Internet Router .
IP Grouping :-
Since, he is alre…
Cost-effectiveness is the common term that we are hearing or seeing nowadays and this exists in all forms on the globe, In this tough economic situation the motive of Network Administrator should be optimizing the current infrastructure for future accommodation.
Optimization plays a major role when it comes to distributed network architecture or MPLS network. Most of the complaints from users at each location , Application usage is very slow at business hours, Ofcourse the possible reason might be due to other unwanted traffic consuming large amount of bandwidth over the business critical application.
We will have scenario based explanation to elaborate this problem of Network Administrator:
Are you an ISP or MSP trying to monitor client’s bandwidth utilization and bill them based on the usage? The solution for your monitoring need would be ManageEngine NetFlow Analyzer.
Why ManageEngine NetFlow Analyzer?
ManageEngine NetFlow Analyzer is the only tool which does NetFlow, sFlow , IP FIX, jFlow, AppFlow analysis for bandwidth monitoring and has billing module integrated with it to make ease of billing process.
Earlier ISP’s used SNMP based tools to calculate monthly data from customer’s edge router (called as CPE’s) and then manually calculate the bill based on 95th percentile or volume of data used. This manual process was very time consuming and tedious for the Network …
During these rough economic times that we are currently going through, every single penny spent on enhancements, upgrades in the network to accommodate future demand is questioned. To make do with the existing resources with cost-cutting in mind is the most ideal solution until the economy recovers.
This mindset has a direct implication on every organization and, eventually, every department within it. Capacity planning plays a major role to cut the cost spending on enhancing the network or bandwidth to accommodate growth.
The Capacity Planning reports in NetFlow Analyzer’s Professional plus edition will help you to identify bandwidth usage growth and application growth over a period of time and it …
In most of the Corporate networks, the common problem seen over decades is that application performance worsens during business hours. Network Admin managing the corporate network faces the huge task of finding out what is causing the slowness in accessing the application hosted on a remote data center.
The application performance can degrade due to following reasons:
Application installed server is not good enough (Related Hardware).
Bandwidth availability is less when accessing from remote office
The first point can be troubleshooted using our ManageEngine tools like ManageEngine OpManager and ManageEngine Application Manager. We will concentrate on the 2nd Point which is our focus area, since …
Both Cisco 6500 & 7600 serve as Core devices on a network to distribute large amount of traffic. The high volume of packets and packet rates of traffic on some device links which leads to more utilization of CPU and memory for performing traffic analysis in this scenario. One solution to avoid this problem is sampling. Sampling defines that instead of every packet, 1 out of N packets (where N is the sampling rate) is captured and sent to the NetFlow Analyzer for traffic analytics. Based on the information in 1 packet, the traffic pattern for the rest of the packets is constructed.
The sampling rate is indicated in a header field of NetFlow version 5 (same sampling rate fo…